Depending on statistical models, the number of people inhabiting our planet could top 16.6 billion or be as low 6.8 billion.

In either case, the world’s poorest regions will likely see a dramatic population boon. In Africa alone, the population is forecast to increase nearly four-fold by 2100 to 4.2 billion. Nigerians are expected to outnumber the entire population of Europe. Click here to read more about the UN’s predictions.

Previous UN data projected the world’s population to reach 9 billion by 2050, and food production will need to increase by 70 percent over the next 37 years.